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Cork, in all its various forms, is derived from the Cork Oak (Quercus suber) tree which is native to southwest Europe and northwest Africa. Half of all cork production is done in Portugal. The bark of the cork oak is harvested entirely by hand with the first cut being when the tree is about 25 years old. Harvesting can continue after that every 6-12 years, and is only done by local craftsmen. The trees live 150-250 years, and there are usually 12-15 cuts per tree throughout its lifetime.
Granules of cork can be mixed into cement to increase energy absorption, low thermal conductivity, and low density. It has been used in rocket technology because of its fire resistance, and it can also be made into bricks for the outer walls of houses.
Cork use in building has declined in the past 20 years. This is mainly because of a change in fashions since the ’70s, some difficulty with building regulations, and poor quality cork sold in the ’80s and ’90s. Cork marketing is changing however, and we may soon see a revival of cork use everywhere. Cork flooring is already readily available, and it is possible to obtain cork insulating boards.
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One Response to "Cork"
June 23rd, 2008 at 3:19 pm
Thank you for the nice post and for spreading the word about cork oak!
For those interested in finding out more about cork oak floors, Wicanders floors represent a generations-old balance between environmental conservation, creation of wealth, and social development that benefits millions of people worldwide.
Wicanders was recently chosen by the readers of Qualified Remodeler, because cork oak is a sustainable resource that balances natural beauty and environmental responsibility, and it also absorbs acoustic vibrations, reduces allergens, and prevents thermal transfer, which reduces energy costs. We have also recently joined Winners’ Circle for the 2008 GREEN LOG Home and Lifestyle Awards in the Flooring: Alternative Green Materials category. We were chosen from over 80 nominees, and we are proud to be among this prestigious group of companies and individuals.
You can read more about Wicanders Cork Oak Floors on our blog, http://wicanderscorkoakblog.com
Thanks a lot!